is being done. Also my audi tech says he can do something to the software to get it smog'd. I have the APR stage 1+ and a APR diverter valve. That made a huge difference and cost is around 1K. I had mine done at Ingolstadt West is Canoga Park. Max'n what you have can be done by replacing hoses and max'n the intake charge and keeping things cool. Getting back what we loose to heat should be our first mod. E-mail my best friend he's a master audi tech here in Bakersfield at vwtech121@yahoo.com he will advise you well!